Sewing-machine.



J. KIEWIOZ.

SEWING MACHINE.

APPLICATION FILED JUNE 4, 1914.

Patented Dec. 15,1914.

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Witnesses.

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SEWING MACHINE.

APPLICATION FILED JUNE 4, 1914.

1,121,106. Patented De015.1914.

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NEED TES PATENT onruon.

JOHN KIEWICZ, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO THE REEGEVIBUTTON' HOLE MACHINE COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF MAINE;

SEWING-MACHINE.

Specification of Letters Patent.

Patented Dec. 15, 1914.

Application filed June 4,1914. Serial N 0. 843,048.

To all whom it may concern:

Be it known that I, JOHN Kmwioz, a citizen of the United States, residing 'at Boston, county of Suffolk, State of Massachusetts, have invented an Improvement in V by a blind stitch will be produced, and particularly to the manner of mounting the bender and presser foot mechanism on the work support; There are blind stitch sewing machines of various types among which might be mentioned those for finishing but-V tonholes, and in order to illustrate the invention I have shown it as it would be embodied in a blind stitch sewing machine of V the so-called buttonhole-finishing type. Ex-. amples of sewing machines of this type are found in the followingUnited States patents: No. 987,966, March 28, 1911; No. 1,017,537, December 17, 1912; No.71,088,624, February 21,1914. In sewing machines of this type it is a desideratum to have the up per face of the work support as free as possible from projections, and also to so arrange the bender mechanism as to provide for high speed operation. patents the bender is sustained on a carrier which is pivoted to the work support, thus obviating the necessity of an overhanging arm or bracket for sustaining the bender. Inrmy present invention I have provided a sewing machine of 'this type wherein the overhanging arm is omitted and the bender, is sustained by a bender carrier pivotally secured to the work support and have mounted the bender carrier and presser foot in such a way that the bearings therefor do not form any projection that stands above the face of the work support, and have also pro vided a construction wherein the bearing member for the bender carrier and presser foot can be readily removed with these parts; and have also otherwise improved sewingrmaohines of this type, all as more fully hereinafter described and then pointed out in the appended claims.

In the drawings wherein I have illustrated In the above-mentioned a selected embodiment of my invention, Fig-, ure 1 is an under side view of a sewing maehine'made in accordance with'my invention and showing the portions thereof which are essential to the invention; Fig. 2 is a section on substantially the line wa:, Fig. 1; Fig.3 1s a planview of a portion of the bed of the machine; Fig. 1 is a section on the line y-3/, Fig. 2, showing the construction of the bearmg member.

The sewing machine herein shown comprises the usual base frame, 1, the upper surface 2 of which constitutes a work support that is provided with the usual work-receiving groove into which the work is bent by the bender. The bender for forming the bends in the work is shown at 3 and it is sustained on a bender carrier 1 in the form of a lever pivotally mounted on the bed frame 1 and actuated by a cam 5 on the usual driving shaft 6 that is situated beneath the work support.

7 designates the presser foot which is sustained on'a presser foot carrier 8 also pivotally secured to the bed frame '1 and yieldingly held against the work as usual in ma chines ofthis class.

In order to'provide a construction which presents no projections above the surface of the work support and yet to provide proper means for pivotally sustaining the bender carrier and presser foot carrier, I have herein'shown said two parts as pivotally mounted in a bearing member 9 that is preferably detachably secured to the work support, and when in normal position has its top edge flush with the work support, as shownin Fig.2. As herein shown the work support is provided with an opening 10 of a size to receive the bearing member, and is formed with lips or flanges 11 on which the bearing member rests, the latter being detachably secured to these lips or flanges in any suitable way as by means of screws 12. The bender carrier and presser foot carrier are both herein shown as situated at one side of the bearing block and as projecting through openings. in the work support. The bender carrier has a rock shaft 13 formed integral therewith and extending laterally therefrom which has bearing in the bearing member 9, and said bender carrier is provided with the depending arm or portion 14 whichis situated below the work support and carries at its lower end a roll that engages the r bender actuating cam 5 mounted on the driving shaft 6. This cam 5 is shown'as a facecam, and the'roll is held against said cam by means of a spring 17 which engages 5 a stud 18 extending from the arm 14. The rock-shaft 13 is held in this bearing by means of a washer 19 that is secured to the end of the shaft by a screw 20. The presserspring 23' that yieldinglv holds the presser foot-against the work. In machines of this class it is desirable that the presser. foot shouldbe ,raised from the work support when themachine is brought to rest, and the means by which this is herein accomplished is similar to that shown'in myco-pending The driving shaft 6 has thereon stop cam 24 which cooperates with an arm 25 forming part of the stop mechanism which, however, is only partially shown herein as it forms no partofthe present invention. The arm 22' connected to the presser-foot rock-shaft carries a laterally-extending finger-26 which-underlies the arm 25 and is normally heldin engagement therewith by the spring 23. v structed that when the machine is brought to rest the stop cam 2fwill force the arm 25 downwardly" thereby acting through thefinger 26 and arm 22 to actuate the presserfoot carrier to raisethe resser-foot from the work.

It will be noted that the bearing block 9 while of proper dimensions to give a suflicient bearing to the rock-shafts 13 and 21 is nevertheless flush with the top surface of the work plate and said bearing member, therefore, does not present any projections which rise above the work support. It will also be noted that this bearing 'memberis sustained in position on the lips or flanges 11 and can be readily removed from the top of the ,machine. The construction of the bender carrier and the presser-foot; carrier e5; is such as to permit the bearing member with sa d bender carrier and presser-foot carrier to be readily removed from themachine if occasion arises, it merely being necessary to disconnect the spring 23,.from 6O said arm. hen this is done'and the screws 12 have been removed the bearing member with the presser-foot carrier and benderfoot carriercan be readily removed from ta the top of the machine, This is a decided application Se. No. 821,496, filed February 'The stop cam is so .con

thearm 22 and remove the finger '26 fromv ment of the work, and this end is admirably accomplished in the construction herein set forth.

By the term Fworksupport as herein used, I have referred generally to the top of the base frame rather than to the particular portion with which the work has contact.

I claim: c 1. In a sewlng'machine, the comblnatlon with a work support having an opening, of

a driving shaft beneath the worksupport provided with a bender-operating cam, a bender carrier projecting through. said opening and operated by said cam, a bender sustained by said bender carrier, and a bearing member removably securedto the work support at said opening andtov which said bender carrier is pivoted. a

2. In a sewing machine, the combination with a work support having an opening, of a bearing member removably sustained in said opening, a bender carrier pivoted to the bearing member and extending through and beneath the worksupport, and means beneath the work support to actuate the bender carrier, the top of the bearing member being substantially flush withfthe top of the work support.

3. In a sewing machine, the combination this type is of a'dvanwitha work support having an opening, of i a bearing member occupylng said opening and removable from the top of the work support, the top of the bearing member coming substantially flush with the top of the work support, a bender carrier pivoted to the bearing member and, extending through and beneath the work support, and means to actuate said bender carrier.

4. In a sewing ;machine, the combination with a work support having an opening, of a a bearing member removablysustained in said opening, a bender carrier pivoted to the bearing member and extending through and beneath the work support, meansabeneath the work support to actuate thebender carrier, the top. of the bearing member being substantially .flushwith the top of the work support, and apresser foot carrier also pivotally mounted on the bearing member.

5. In a sewing machine, the combination withawork support. having an opening, of,

a bearing member removably sustained in said opening withthe topthereofcoming substantially flush with the top of the work support,a bender carrier extending through and beneath the work support, said bender carrier having a rock-shaftintegral therea bearing member occupying said opening and removable from the top of the work support, the top of the bearing member coming substantially flush with the top of the work support, a bender carrier pivoted to the bearing member and extending through and beneath the work support,

means to actuate said bender carrier, and a presser .foot carrier also pivotally secured to and removable with the bearing member. 7. In a sewing machlne, the comblnatlon with a work support having an opening, of.

a bearing member removably sustained in said opening, a bender carrier pivoted to the bearing member and extending through and beneath the work support and being removable from the. work support with the bear- 7 ing member, and means beneath the work support to actuate the bender carrier.

8. In a sewing machine, the combination with a work support having an opening, of a bearing member removably sustained in said opening, a bender carrier pivoted to the Copies of this patent may be. obtained for five cents each, by addressing the Commissioner bearingmember and extending through and beneath the work support, the portion of the bender carrier below the bearing member extending substantially vertically whereby the bender 'carrier can be removed from the work support with the bearing member, and means beneath the work support to actuate the bender carrier.

9. In a sewing machine, the combination withra work support having an opening, of a. bearing member removably sustained in said opening, a bender carrier pivoted to the bearing member and extending through and beneath the work support, a presser foot carrier also pivoted to the bearing member and. extending through and beneath the work support, the portions of the bender carrier and presser foot carrier that are situated below the opening in the work support extending in a general vertical direction, and means beneath the work support to actuate the bender, said bender and presser foot carrier being removable from the work support with the bearing member.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

' JOHN KIEIVICZQ Witnesses LoUIs C. SMITH, FRANCIS A. SHEA.

of Patents;

Washington, D. G. 

